Audi A4 B8 Door Module Rear Right O/S Control Unit Module ECU 8K0959794

The Right Rear Door Module for Audi A4 B8 is a specialized component from the Electronic Control Modules and Controllers group, responsible for precise management of the rear passenger door functions. The original Audi design ensures stable communication with the vehicle's electrical system and proper cooperation with other controllers in the comfort network. This solution is intended for users who want to maintain the consistency of electronics and the characteristic functionality of systems in their Audi A4 B8.

Specifications and technical data

• SKU: 8K0959794
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0959794
• Substitutable numbers: 8K0959794, 8K0 959 794
• Location on the vehicle: Rear, Right
• Category: ECUs & Computer Modules

Purpose and Function of the Door Module

The presented controller is dedicated for installation in the right rear door area of the Audi A4 B8 generation. As a component responsible for handling the door's electronics, it works with the body's electrical system, enabling the correct operation of functions such as window control, central locking, or communication with the main comfort module (depending on the vehicle's configuration).

Thanks to Audi's factory architecture, the module integrates with the vehicle's data bus, which allows for proper reactions of safety and comfort systems. Using an original controller minimizes the risk of communication errors, incorrect readings, and coding issues.

Benefits of Using an Original Audi Module

Choosing an original door module for the Audi A4 B8 translates into a number of practical advantages in daily use:

• Full electrical compatibility with the door harness and the rest of the vehicle's electrical system, without the need for modifications.
• Consistent operation with other electronic control modules and controllers in the car.
• Ability for correct coding and diagnostics using standard Audi service tools.
• Reduced risk of errors in the controller's memory related to incompatible aftermarket parts.

For users who want to maintain the factory-original operation of comfort systems, using such a module is a particularly beneficial solution.

Vehicle Placement and Installation Aspects

The module is designed for installation in the right rear door area, which facilitates unambiguous identification during parts selection. This specification of placement minimizes the risk of confusion between the left and right sides, and between the front and rear axles of the vehicle.

In practice, installation involves connecting the module to the factory door harness and securing it in the location designated by the manufacturer. By maintaining the original housing and connector design, the component works with factory brackets and mounting points, which speeds up service work and limits interference with the door structure.

Product Characteristics and Service Application

The offered module belongs to the group of Audi Electronic Control Modules and Controllers, meaning it is designed to work with the electronic systems of this brand. It is suitable for both typical replacement of a damaged controller and for post-accident repairs where restoring full door functionality is necessary.

In service applications, it is particularly important that the module has an assigned OEM part number and interchangeable numbers, which facilitates verification of compatibility with a specific vehicle equipment version. This allows the workshop or user to precisely select the component for a given Audi A4 B8 unit, maintaining the consistency of the electronics configuration.

Product Condition and Importance for System Durability

The component is offered as a used Audi module, which in practice means it comes from disassembly and has been verified for its suitability for further use. For many users, this is a reasonable compromise between repair cost and maintaining original quality of workmanship and fit.

In the case of body electronics, using an original, used controller often provides better operational stability than with inexpensive aftermarket alternatives, especially in the long term of vehicle use.

Maintaining Audi's Character and Expert Knowledge

If you want to better understand how original components – including door modules and other controllers – affect your car's behavior and comfort, it's worth seeking expert knowledge. You can find more about the role of used parts in maintaining the brand's character in the article Audi and Pure Emotion. How Used Parts Help Maintain the Brand's DNA?.

If you are planning a comprehensive repair or upgrade of the body's electronic zone in your Audi and need other components from the same group, such as comfort controllers, door modules, or window control units, check the available parts in the Audi Electronic Control Modules and Controllers category.